This library makes libuv available to lua scripts. It was made for the luvit
project but should usable from nearly any lua project.

The library can be used by multiple threads at once. Each thread is assumed to
load the library from a different `lua_State`. Luv will create a unique
`uv_loop_t` for each state.

API docs (installed at $DOCSDIR/docs.md):
   https://github.com/luvit/luv/blob/master/docs/docs.md
